Concrete mixer



May 23, 1950 A. G. zlcovlcH 2,508,633

CONCRETE MIXER Filed Oct. 25, 1947 2 Sheets-Sheet 1 May 23, 1950 l A. G.zlcovlcH 2,508,633

CONCRETE MIXER Filed 001;. 25, 1947 2 Sheets-Sheet 2 il, ,4f/5, i

Patented May 23, 195() UNITED 508,633 f-l GONCRETEVMER Calif.

:Applicatien canteras, langsame-N :7a-2,094 Ysclaims. (Clfftailn)'i'hezfpresent invention relates --to--batch-plants rof1 the1ftype*employing pre-mixers 1 v-forconcrete tand: is concerned `moreparticularly-.Withthe Aimproved apparatus having an advantageous-ar--f'angement ofv the feed chutes for use 'in delivering iaggregateandcementl totrucks and-to-the pre- 1, kmixer selectively.

In thefinstallation Ofpre-'mixers in-existing batch :plants or :in theerectionof batch. plants dto :incorporate 'a1 pre'ernixer,` it -isdesirableg'to fmaintain yay reduced `height of the-:batch: plants @abovethetruck runway because of the consider- .Mablel savings involved `inalteration and consfstruction.

Ins accordance with" the instant invention, the

l,problem of heightV is :minimized byz-the usehof `-selectively operabledischarge chutes r.for cooper- .lr-'ation with-the dischargeoutlet ofthe -batch plant, so that one chute isfemployed Whenrtheba-tch fplantVis delivering directlywto atruckfandanotherz position.

-rrFigures Land 2vshow a vbatch plant .prei-'mixer installation:ofv thegeneral type disclosed and 4.claimedfin my copending applicationSerialwNat 272836,82, led February `14, A1947, for Concrete igmixers.The batch plant IB -mayinc1ude-a1con qventional v:arrangement of binsy(notshovvm-or =-selective-del-ivery.ofdiiTerent types of aggregate,

f-fwhichaterminates in a cylindrical -end por-tion fhrforming the'discharge outlet of the batch plant The dischargeoutlet isspacedfabovecthe :ground: level I Iy to, provide a truck stationlat-I Iasoi-.that trucksgfcan be driven directly lbelowthefischargemeanss-for.delivery of material thereto.

:Associated:- With the -bin structure VI II Cthere -is provided ampreernixer installationF comprising za mixer 1I-2 :off-conventionalconstruction. '.fThe

H winixedffconcrete Iromwthejfinixer I2. therme-mixer inA its chargereceivingA'or-:loading $252 the rollers I3 on a frame I4 -fwhichffmay-Talso #Amount fsuitablefdrive f means @for fthe drum; of the .l-Fm-ixer..--The; drive meansfillustrated is an electric motor:I I 5;suitablylconnectedmthroughf: a ygearbox 5 15a and adrivefgear-l I\. 5`btogalarge'drive. gear nI-2a onf ther-mixer.' Thefmixerf VI 2vffis-.providedwithvi an .-.fintake .p cpening;l I6 at :one endthereof,yandrdis- -charge"means ;I 'bat-,the .etherf-end--thereofleading#toca-downwardly extending` discharge chute I8.

Y pneuniatie;oriV vhydraulic cylinderfmechanism- -I 9 sgfpivotedggtoadependingeportion Ma 4of :the y'frame "iMeand-fpivdtallyconnected=to-fthe chute IB. The dischargeendiofw-themixer --I=21--is=-`providedfwith q 151e@ i conventional fformzof; closure-2 Infwhich can be-emoyed-jfrom; the'clcsedposition:shown infFigure- 2 tothe-openpcsitionfishown in Figure 1 by .opera- :rtion offfthe :pneumaticfiorhydraulic vcylinder -,mechanismi-Zfzpivotally*connected-- thereto and:20ialsov-:pivoted on an extension ,I4b-of the frame- I4.

. Tof-provide; `for, movement of etheemixeri from .-itsg lowempositionshown-finV Figure-w2- toean -elevatedfibostionn shown in 'Figure the 1-`mixer iframe I4 1 visffprevided@at each ,1 side with three 25fro11ers22whicheengageranyassociated-inclined track 5 23; rhaving limit-stops f23a- 'and/Z 3b atthe ends thereof. Each of the tracks'23 is supported ybysuitable ramestructurefsuch as the I-beams 24from anaassociated baseor; support structure -1 concrete foundation structure I-vvlaich vlis'.located fatscne; side ci?7 the `truckstation II af'and has at its otherside a second-truckstationl Ib. vAtruck at the station I Ib ispositioned Yto receive pret'llhe {operating} me' anslrory eiiecting.contrlled y-niay include ampneiirnatie: orf hydraulic cylinder mechanism73j .pivotallyJ-niounted at vits Y lower Y end -intaftransvjersebearingv-structureSZbetw'een the r.@undratione-'1911 Miene 26:0f'"ih-Si1DP0t` Structure fandevivciallr @Oeneidfaet .heir flipper' ends "teya transverse shafti33sec1-ired metrica-,respective Y side; pol-tions-,of the-frame I4.y A

Vivllhe, controls; rforfftlie electric motor -I Seand.- the at anoperator's station which is preferably-lthe ffoperatorsstation foil-thebatch plant.

The ieper-atar, therefore by operation-- yof the .5mfpneumaticaorhydraulic? mechanisml ,can move 'theamixer. i12alongfthevtracks xll3 lfrom rits lower orifcharg'ei receivingI position#shownvin Figure 2r (1to1 anfwupperfor. :discharge position s(Figure Afl) wher-e; the@'disclzutirgcechute,t 4185-. is#v fdisposedf-faboveytt2l-inc1udesfaarotar-y tdrinn supported-@bytruckiatetherttruckfstatlonglib.

A pair of selectively operable discharge chutes 31 and 38 are carried bya generally rectangular' framework 4l extending outwardly from theloading end of the mixer I2. The discharge chute 31 is preferably of atelescoping or extensible type and has its upper portion 31a securedadjacent the outer end of the framework 4| so that when the mixer is inthe elevated position ,shown in Figure l ythe -upper chute portionA 31amates with the lower end of the outlet lub. The lower portion 31h of thechute is connected by a stop chain 42 to the frame 4| to limit itsextended estacas or down position. To control the adiustment y tof thelower chute portion 31h, a-cable 43 is'connected thereto and extendsover a sheave`44 on the frame 4 l. The end of the cable 43 is attachedto a suitable counterweightso that the truckV operator or workman canlower the movable pore..

tion 31h of the discharge chute into'op'erative engagement with thetruck as shown in dotted lines in Figure 1.

The feed chute 38 for the mixer l2V is pivoted at 45 on a cross-angle 4lo the frame 4I, and is adapted in its inactive position to rest freelyon another cross angle 48 of the frame 4l. The

feed chute has its discharge end positioned within the feed opening I ofthe mixer. To control pivoting o the chute 3B to engage its upper endwith the discharge outlet ib, a chain 4B extends between the upper endof the chute 3B and the' batch plant structure I0. As the pre-mixer islowered from the position shown in Figure 1 to the position shown inFigure 2, the feed chute 38 moves downwardly with the mixer along itsinclined path until the chain 48 becomes taut and starts the pivoting ofthe feed chute above its support axis 46. During the continuing movementof the mixer, the feed chute 33 moves into engagement with the dischargeoutlet ib to connect it with the feed opening i6 of the mixer l2.

From the above description it willbe seen that the double chutearrangement carried by the premixer l2 automatically conditions the`discharge outlet Ib of the batch plant to deliver material to theproper location as controlled by the adjustment of the pre-mixer to andfrom its loading position. A

While I have shown and described certain preierred embodiments of theinvention, it is apparent that the invention is capable of variation andmodificationfrom the forms shown so that its scope should be limited--only by the scope of ,the claims appended hereto.

I claim: "f

1. In a batch plant having a discharge outlet:

for aggregate and cement, a concrete'mixer, means mounting said mixerfor bodily -movement between a lower loading position and an upperdischarging position, and a pair of viced chutes mounted in spacedrelation lfor movement with said mixer and positioned respectively inalignment with said discharge outlet in the loading and dischargingpositions of said mixer, one of said chutes being connected to theintake opening of the mixer andthe other chute being oper-4 ative withrespect to a truck below said discharge outlet.

2. In a batch plant having a discharge outlet for aggregate and cement,a concrete mixer,

means mounting said mixer for Vbodily movement between a lower loadingposition and an upper discharging position, a pair of feedchutes mountedin spaced relation for movement with said mixer and positionedrespectively? in alignment with said discharge outletzinvthe" dischargeoutlet during movement of said mixer,

3. In a batch plant having a discharge outlet for aggregate and cement,a concrete mixer, means mounting said mixer for bodily movement betweena lower loading position and an upper discharging position, an auxiliaryframe projecting outwardly from the feed end of the mixer, and a pair offeed chutes mounted in spaced `relation on said auxiliary frame formovement with said mixer and positioned respectively in alignment withsaid discharge outlet in therespective loading and discharging positionsof said mixer, one of said chutes being connected to the intake openingof the mixer and the other chute being operative with respect to a truckbelow said discharge outlet.

4. In a batch plant having a discharge outlet for aggregate and cement,a concrete mixer, means mounting said mixer for bodily movement betweena lower loading position and an upper discharging position, and a pairof feed chutes mounted in spaced relation for movement with saiddischarge outlet in the respective loading and discharging positions ofsaid mixer., one of said chutes being connected to the intake opening ofthe mixer in the lowermost loading position of said mixer and the otherof said chutes being operative with respect to said discharge outlet inthe uppermost discharging position'of said mixer for discharging ofmaterial into a truck below said discharge outlet.

5. In a batch plant having a discharge outlet vfor aggregate and cement,a concrete mixer,

means mounting said mixer for movement substantially along an inclinedplane between a lowermost loading position and an uppermost dismountingthereon for movement to engage said discharge outlet in the lowermostposition of said mixer, and the other chute being operative with respectto said discharge outlet in the uppermost position of said mixer fordischarging of material into a truck below said discharge outlet` Y 6.In a batch plant having a discharge outlet -for aggregate and cement, aconcrete mixer,

means mounting said mixer for movement substantially along an inclinedplane betweenl a lowermost loading position and an uppermost dischargingposition, a pair of feed chutes mounted in spaced relation for movementwith said mixer and positioned respectively in alignment with saiddischarge outlet in the respective loading yand discharging positions ofsaid mixer, one of said chutes being connected to the intake opening ofthe mixer and having a pivoted mounting thereon for movement to engagesaid discharge outlet in the lowermost position of said mixer and theother chute being operative with respect to said discharge outlet in theuppermost I position of said mixer for discharging of material loadingand1u'lnto a.' truck below said dischargeoutlet'randa connection fromsaid one pivoted chute to said batch plant for controlling pivotingmovement thereof to and from operative relation with respect to saiddischarge outlet during movement of said mixer.

7. In a batch plant having a discharge hopper for aggregate and cement,a concrete mixer at one side of said plant, a truck station below saidhopper at one side of said mixer, and a second truck station at theopposite side of said mixer; means mounting said mixer for movementbetween a discharge position in operative relation to a truck at saidsecond station and a charge receiving position in operative relation tosaid hopper, a framework carried by said mixer, a truck Afeed chute ofextensible construction on said framework for alignment with said hopperwith said mixer in its discharging position, a mixer feed chutepivotally mounted on said framework for alignment with said dischargehoppervin the charge receiving position of said mixer, and a controllingconnection between said mixer feed chute and said hopper to causepivoting of said mixer feed chute to engage said discharge outlet uponmovement of said mixer to its charge receiving position.

8. In a batch plant having a discharge hopper for aggregate and cement,a concrete mixer at one side of said plant, a truck station below saidhopper at one side of said mixer, and a second truck station at theopposite side of said mixer; means mounting said mixer for movementbetween an upper discharge position in operative relation to a truck atsaid second station and a lower charge receiving position in operativerelation to said hopper, a framework carried by said mixer, a truck feedchute of extensible construction on said framework for alignment withsaid hopper with said mixer in its discharging position, and a mixerfeed chute on said framework for alignment with said discharge hopper inthe charge receiving position of said mixer, said framework and saidrespective feed chutes being movable with said mixer during its movementbetween its respective upper and lower positions. ANTHONY G. ZICOVICH.

REFERENCES CITED i The following references are of record in the le ofthis :patent:

UNITED STATES PATENTS Number Name Date 304,259 Brunton Aug. 26, 18841,264,732 Williams Apr. 30, 1918 1,827,713 Eggert Oct. 13, 19312,264,039 Hoya Nov. 25, 1941

